RS485 GSM Modems, RS485 to GPRS

Oct 20,2016

Introduction USR-GPRS232-734 is a new GPRS device developed by USR IOT in 2016. Maturation software functions, covering mostly conventional application scenarios. Users can realize Serial to Network bidirectional transparent data transmission via simple configuration. Supporting custom registration package, heart beat package. Supporting 2 Socket Connection, and USR cloud join in. USR-GPRS232-734 use DC power supply …

What occasions to use GPRS Modem?

Aug 07,2016

GPRS Modem can be applied in many fields, including electricity, environmental protection, water conservancy, industrial, weather, traffic, security, mapping and other. Although it described above so many GPRS applications. But from a practical point of view, the more we want to have some clear principles to determine a unified collection system is suitable for use …

GPRS Modem data transmission applications Basics

Aug 05,2016

GPRS Modem stands for GPRS data transmission unit in the country at present actually GPRS Modem has a more clear agreement: GPRS Modem is designed for serial data transfer via GPRS network GPRS wireless devices. Four core functions of GPRS Modem: 1. Integrated TCP / IP protocol stack GPRS Modem encapsulated in the PPP dial-up …

GPRS Modems transmission mode

Feb 18,2016

Data transmission mode: GPRS Modems can be set to different operating modes to meet the requirements of different user applications. Under different operating modes, GPRS Modems position in GSM / GPRS communication system platform is not the same. Transparent transmission mode: The device does not resolve any data received from the serial port directly to the …

Regarding GPRS / GSM Modems network connection explanation

Feb 17,2016

Many user doubt: Why GPRS / GSM modems only can go into a public IP computer? Can it work at a campus network/corporate network? Answer: Yes, it can. But it need cooperate with campus network/corporate network. Detail explanation as below: GPRS / GSM modems connect to network is send a TCP/UDP connection, during connection and communication …

GSM Modems transparent transmission mode setting method

Feb 17,2016

SMS DTU transparent transmission mode setting method Set SMS transparent transmission mode two major commands AT+CIMOD=”MOD”<CR><LF> Configuration module operating modes: MOD said operating mode, 0 means transparent transmission mode, 1 serial command mode, two said AT command mode, 3 HTTPD Client mode, four said messaging transparent transmission mode. Configuration command: AT + CIMOD = “4” …

GPRS / GSM Modems configuration parameters using SMS.

Feb 16,2016

Send SMS to the target phone number(Module need to work in data Transmission mode). Mobile phones to send text messages to configure the module parameters setting parameters: IP, Netprotocol, remote port, admin, AT+CIPSCONT=1, “TCP”, “usrcn.gicp.net”, 10101, 1 Set the baud rate: admin,AT+CIPR=115200 Set the serial port, data bits, stop bits and parity admin,AT+ICF=3,3 Restart the …

GPRS Modems FAQ

Feb 16,2016

1. GPRS Modules Settings check whether the serial parameters of working parameters and the GPRS modules of GPRS modems agreement serial line, check whether it is normal check the line connection is normal check using the serial line sequence, TXD to RXD, RXD to TXD, GND to GND check whether electricity module, check module power …